1. Tempering Furnace Solutions (Solve Brittleness, Cracking & Internal Residual Stress)

Problems Solved: Workpiece brittleness after quenching, internal residual stress, easy cracking, unstable hardness and poor fatigue resistance. Ordinary tempering equipment causes uneven temperature field, leading to inconsistent toughness and large batch performance deviation.

Applicable Processes: Low-temperature tempering, medium-temperature tempering, high-temperature tempering, stress relief tempering, post-quenching stabilization

Applicable Workpieces: Tool steel, mold parts, fasteners, bearing components, quenched structural steel parts

Matched Rexin Full Products: Tempering Furnace

Core Advantages: Uniform temperature field, thorough stress relief, balanced hardness and toughness, stable batch consistency

Target Industries: Hardware & Fasteners, Tooling & Cutting Tools, Bearing & Precision Parts    >>> Tempering Furnace

Box Tempering & Annealing Furnace Technical Parameters

Max Working Temperature：750℃ Temperature Uniformity：±5℃ Main Function：Stress Relief, Low-temperature Tempering, Bright Annealing Cooling Method：Natural Slow Cooling / Controlled Atmosphere Cooling Loading Mode：Trolley-type / Rotary tray customized

Typical Improvement Indicators

1. Effectively eliminate internal residual stress of metal parts

2. Prevent finished workpieces from deformation during machining

3. Improve material ductility for subsequent deep processing

2. Annealing Furnace Solutions (Solve Hardening, Deformation & Surface Oxidation)

Problems Solved: Material hardening, poor ductility, stamping cracking, workpiece deformation and surface discoloration after processing. Conventional annealing leads to oxidation layer, requiring repeated polishing and increasing production cost.

Applicable Processes: Stress relief annealing, softening annealing, recrystallization annealing, stainless steel bright annealing

Applicable Workpieces: Stainless steel strips, stainless steel tubes, copper parts, stamped metal components, general mechanical parts

Matched Rexin Full Products: Annealing Furnace, Ammonia Cracker

Core Advantages: Eliminate residual stress, improve material formability, mirror bright surface, no secondary processing

Target Industries: Stainless Steel Strip & Tube, Heat Exchanger & Radiator, General Metal Processing   >>> Annealing Furnace

Continuous Mesh Belt Bright Annealing Furnace Technical Parameters

Max Heating Zone Temperature：1120℃ Protective Atmosphere：N₂-H₂ Mixed Shielding Gas Transmission Speed：0.2~2.5 m/min Stepless Adjustable Temperature Uniformity：±4℃ Applicable Strip Width：Customized 100mm–800mm Output Feature：Continuous 24h automatic production

Typical Improvement Indicators

1. Stainless steel surface keeps metallic bright finish, no oxidation discoloration
2. Save surface grinding & polishing process cost
3. Stable mass production for stainless steel strips, fittings, hardware

3. Hardening Furnace Solutions (Solve Insufficient Hardness & Uneven Surface Strength)

Problems Solved: Insufficient workpiece hardness, uneven surface strength, poor wear resistance and low dimensional stability after heat treatment. Unstable heating temperature leads to unqualified quenching effect and high defective rate.

Applicable Processes: Overall quenching, surface hardening, high-temperature heating quenching, uniform hardening treatment

Applicable Workpieces: Cutting tools, molds, high-strength fasteners, bearing steel parts, mechanical wear-resistant components

Matched Rexin Full Products: Hardening Furnace

Core Advantages: Precise temperature control, uniform hardening effect, high surface hardness, stable mechanical performance

Target Industries: Tooling & Cutting Tools, Hardware & Fasteners, Bearing & Precision Parts   >>> Hardening Furnace

4. Carburizing & Quenching Furnace Solutions (Solve Shallow Carburized Layer & Low Wear Resistance)

Problems Solved: Shallow carburized layer, uneven carbon penetration, inconsistent surface hardness and short service life of low-carbon steel parts. Traditional equipment causes unstable carbon potential and poor batch repeatability.

Applicable Processes: Gas carburizing, carbonitriding, carburizing and quenching integrated treatment, surface strengthening

Applicable Workpieces: Gears, transmission shafts, automotive structural parts, engineering machinery components

Matched Rexin Full Products: Carburizing & Quenching Furnace

Core Advantages: Precise carbon potential control, uniform deep carburized layer, strong wear resistance and fatigue resistance

Target Industries: Automotive Parts, Heavy Machinery, Engineering Equipment     >>> Carburizing & Quenching Furnace

Carburizing & Quenching Furnace Technical Parameters

Maximum Working Temperature：950℃ Temperature Uniformity：±5℃ Carburized Layer Depth Range：0.3mm–3.0mm Adjustable Carbon Potential Control Precision：±0.02%C Quenching Transfer Time：≤7s Rated Voltage Support：380V / 415V / 480V Customizable Cooling System：Oil Quenching / Water Quenching System Control System：Automatic Carbon Potential Control, Real-time Process Data Recording

Typical Improvement Indicators

1. Uniform carburized layer, avoid soft spot on gear surface

2. Automatic production reduces manual operation error

3. Component surface hardness stable at HRC 58–64

4. Scrap rate of automotive transmission parts decreased by 72%

5. Nitriding Furnace Solutions (Solve Poor Corrosion Resistance & Low Surface Hardness)

Problems Solved: Low surface hardness, poor wear resistance, weak corrosion resistance and easy surface abrasion of precision mechanical parts. Unstable nitriding temperature results in inconsistent nitride layer depth.

Applicable Processes: Ion nitriding, gas nitriding, low-temperature surface nitriding, anti-corrosion strengthening treatment

Applicable Workpieces: Precision shafts, engine parts, mold components, hydraulic mechanical parts

Matched Rexin Full Products: Nitriding Furnace

Core Advantages: Uniform nitride layer, high surface hardness, excellent anti-corrosion and wear-resistant performance

Target Industries: Precision Machinery, Automotive Structural Parts, Mold Manufacturing    >>> Nitriding Furnace

Nitriding Furnace Technical Parameters

Working Temperature Range：480℃~580℃ Nitriding Layer Depth：0.05mm–0.5mm Surface Hardness After Treatment：HV 650–1100 Atmosphere Medium：Ammonia Gas, Mixed Nitriding Atmosphere Temperature Uniformity：±4℃ Optional Type：Gas Nitriding / Plasma Ion Nitriding

Typical Improvement Indicators

1. Greatly improve wear resistance and corrosion resistance of molds & shafts
2. Low-temperature treatment, minimal workpiece deformation
3. Extend service life of precision machinery components 2~3 times

6. Brazing Furnace Solutions (Solve Brazing Pores, Cracks & Air Leakage)

Problems Solved: Brazing pores, welding cracks, flux residue, poor airtightness and liquid leakage of precision bonded parts. Traditional brazing causes oxidation, low joint strength and unstable bonding effect.

Applicable Processes: Flux-free vacuum brazing, high-precision metal bonding, airtight component welding, aluminum and copper brazing

Applicable Workpieces: New energy cooling plates, aluminum heat exchangers, copper conductive terminals, precision tool assemblies

Matched Rexin Full Products: Brazing Furnace

Core Advantages: Zero oxidation, pore-free seamless joints, high airtightness, no secondary cleaning

Target Industries: New Energy Vehicle Parts, Heat Exchanger & Radiator, Precision Tooling       >>> Brazing Furnace

Vacuum Brazing Furnace Technical Parameters

Max Temperature：1250℃ Ultimate Vacuum Degree：8×10⁻⁴ Pa Leak Rate：≤5×10⁻⁷ Pa·m³/s Brazing Temperature Range：650℃ ~1180℃ Temperature Uniformity：±3℃ Workpiece Status：Oxidation-free bright brazing joint

Typical Improvement Indicators

1. No flux residue, high-strength seamless welding seam

2. Suitable for aluminum, stainless steel, copper alloy heat exchangers

3. One-step forming, reduce post-weld cleaning work

7. Sintering Furnace Solutions (Solve Porosity, Low Density & Loose Structure)

Problems Solved: High internal porosity, insufficient density, loose microstructure, low strength and easy deformation of powder metallurgy and cemented carbide products. Separate dewaxing and sintering processes leave impurities and reduce yield rate.

Applicable Processes: Vacuum dewaxing, high-temperature atmosphere sintering, powder metallurgy forming and strengthening

Applicable Workpieces: Iron-based/copper-based PM parts, cemented carbide blanks, soft magnetic components

Matched Rexin Full Products: Sintering Furnace, Ammonia Cracker

Core Advantages: Low porosity, high density, uniform microstructure, high finished product qualification rate

Target Industries: Powder Metallurgy & Cemented Carbide           >>> Sintering Furnace

Powder Metallurgy Sintering Furnace Technical Parameters

Maximum Working Temperature：1150℃ Temperature Uniformity：±3~±5℃ Temperature Control Accuracy：±0.5℃ Adjustable Heating Rate：5~20℃/min Atmosphere System：Nitrogen-Hydrogen Mixed Protective Atmosphere Transmission Mode：High-temperature resistant mesh belt continuous conveying Production Capacity：Continuous 24-hour operation

Typical Improvement Indicators

1. Integrated degreasing and sintering one-line solution

2. Stable density control for powder metallurgy gears, bearings, structural parts

3. Avoid surface oxidation, maintain consistent dimensional tolerance

4. Unit energy consumption reduced by 25% compared with intermittent box furnaces

8. Solution Treatment Furnace Solutions (Solve Insufficient Strength & Poor Formability of Aluminum Alloys)

Problems Solved: Insufficient tensile strength, uneven element distribution, poor forming performance and unstable aging effect of aluminum alloy profiles and castings. Ordinary heating leads to incomplete solid solution and unqualified mechanical properties.

Applicable Processes: Aluminum alloy solution treatment, solid solution strengthening, artificial aging treatment

Applicable Workpieces: 6061/7075 aluminum profiles, aluminum castings, automotive aluminum structural parts

Matched Rexin Full Products: Solution Treatment Furnace

Core Advantages: Uniform element dissolution, stable strength improvement, excellent ductility and formability

Target Industries: Aluminum Alloy Heat Treatment, Automotive Aluminum Parts Manufacturing

9. Furnace Accessories & Auxiliary System Solutions (Solve Unstable Operation & Frequent Failure)

Problems Solved: Incomplete supporting parts, unstable protective gas supply, aging heating elements, poor sealing performance and frequent equipment shutdowns, causing quality fluctuation and delayed production delivery.

Supporting Equipment & Parts: Furnace Accessories (heating elements, high-temperature mesh belts, sealing parts, temperature controllers, thermal couples), Ammonia Cracker

Core Functions: Fully match all 8 types of main furnace equipment, stabilize temperature and atmosphere, reduce failure rate, support long-term stable continuous production and rapid maintenance replacement

Production Mode Selection Guide (Continuous vs Batch Furnace)

Confusion Solved: Unsure whether to invest in continuous mesh belt lines or batch vacuum/box furnaces based on output and precision demands.

Continuous Furnace Solution (For Mass Production): Suitable for 24-hour large-volume, standardized parts including fasteners, stampings and standard hardware. Features high automation, low labor cost and consistent batch quality, ideal for factories pursuing high daily output and low unit cost.

Batch Furnace Solution (For Precision & Custom Production): Suitable for high-precision, high-value, low-to-medium batch workpieces such as molds, cutting tools, new energy parts and large mechanical components. Features ultra-low deformation, zero oxidation and flexible parameter adjustment, ideal for strict tolerance and high-quality industrial standards.

Continuous Mesh Belt Furnace VS Batch Box / Vacuum Furnace Comparison

Comparison Item｜Continuous Mesh Belt Furnace｜Batch Box / Vacuum Furnace Production Mode｜24h uninterrupted continuous production｜Intermittent batch cyclic production Daily Output Capacity｜High, suitable for mass standardized parts｜Low, suitable for small batch & precision customized workpieces Temperature Consistency｜Excellent for same-spec mass products｜Perfect for high-precision, high-demand workpieces Initial Investment Cost｜Higher one-time investment｜Lower initial purchase cost Unit Product Energy Consumption｜Low, energy-saving under long-time operation｜Higher, repeated heating & cooling waste energy Occupied Workshop Area｜Long linear layout, larger space occupation｜Compact independent unit, save floor space Suitable Industries｜Fasteners, stainless steel hardware, mass powder metallurgy parts｜Mold, automotive precision parts, small batch vacuum brazing

How to Choose The Right Furnace For Your Factory

Share these information with our engineer team to get targeted quotation & layout plan:

1. Workpiece material, dimension and single batch weight

2. Required daily output / annual production volume

3. Target metallurgical requirements: hardness, layer depth, surface finish

4. Local factory power supply voltage and available workshop space

5. Atmosphere requirements: air, nitrogen, hydrogen, vacuum environment

Quantifiable Benefits of Rexin Thermal Solutions

All Rexin furnace solutions deliver measurable production improvements, solving manufacturers’ core cost and quality pain points:

1. Lower Scrap Rate: Optimized temperature and atmosphere control reduce heat treatment defects by 20%–40%

2. Stable Batch Consistency: Eliminate performance deviation between batches to meet strict third-party inspection standards

3. Reduce Post-Processing Cost: Bright heat treatment finishes remove secondary polishing and grinding procedures

4. Energy Saving & High Efficiency: Optimized furnace structure reduces power consumption while improving production capacity

5. Longer Service Life: Stabilized material microstructure improves workpiece wear resistance and fatigue life

Calculable Return On Investment

1. Energy Saving: Continuous furnace stable operation reduces repeated heating loss, saving 20%–40% electricity cost annually.
2. Processing Cost Reduction: Oxidation-free heat treatment cancels manual polishing, grinding and cleaning procedures.
3. Raw Material Saving: Effectively cut finished product reject rate, reduce waste loss of metal raw materials.
4. Labor Cost Control: Automatic intelligent furnace reduces operator quantity and manual error.
5. Average Investment Payback Period: 12–18 months under stable full-load production.

Custom Heat Treatment Solution Workflow

We strictly select and combine equipment based on your actual problems from our complete 9 furnace categories to avoid mismatched processes and unnecessary costs:

• Problem Diagnosis: Analyze your existing quality defects, material properties and production bottlenecks

• Accurate Furnace Selection: Match exclusive equipment from tempering, annealing, hardening, carburizing-quenching, nitriding, brazing, sintering, solution furnaces and full accessories

• Process Customization: Tailor heating, holding and cooling curves to solve deformation, oxidation, hardness instability and low strength

• Scheme & Drawing Delivery: Provide 3D layout, complete parameter sheet and formal quotation within 7 working days

• Production & After-sales: Strict factory full inspection, overseas installation guidance, process debugging and lifelong technical support

Core Industry Pain Points & Corresponding 9-Category Solutions

Every common heat treatment defect has targeted furnace solution from Rexin’s full product system:

• Workpiece brittleness & cracking → Solved by Tempering Furnace

• Material hardening & surface oxidation → Solved by Annealing Furnace

• Insufficient & uneven hardness → Solved by Hardening Furnace

• Shallow carburized layer & poor wear resistance → Solved by Carburizing & Quenching Furnace

• Low surface hardness & poor corrosion resistance → Solved by Nitriding Furnace

• Brazing pores & air leakage failure → Solved by Brazing Furnace

• High porosity & low density of PM parts → Solved by Sintering Furnace

• Unqualified aluminum alloy strength → Solved by Solution Treatment Furnace

• Unstable line operation & high failure rate → Solved byFurnace Accessories & Auxiliary Systems

Industry Application Cases

Case 1: Automotive Powder Metallurgy Gear Manufacturer (Southeast Asia) Original problem: Discontinuous sintering, unstable density, reject rate 11.5% Solution: Continuous Mesh Belt Powder Metallurgy Sintering Furnace Actual result: Reject rate dropped to 2.7%, daily output increased 42%

Case 2: Stainless Steel Pipe Fittings Factory (Russia) Original problem: Workpiece surface oxidation, extra polishing procedure Solution: Protective Atmosphere Continuous Bright Annealing Furnace Actual result: Bright surface without polishing, save 36% post-processing labor cost

Case 3: Aluminum Heat Exchanger Enterprise (Europe) Original demand: High quality oxidation-free brazing Solution: Customized Vacuum Brazing Furnace Actual result: Stable brazing seam strength, meet EU automotive component quality standards

Frequently Asked Questions (Full 9-Category Furnace Selection Guide)

1. How do I choose between continuous furnace and batch furnace?

Choose continuous mesh belt furnaces for 24-hour mass production, low unit cost and high output. Choose batch furnaces (vacuum, box, pit type) for high-precision, low-deformation, high-surface-quality and small-batch custom parts. Our engineers match the most cost-effective solution based on your daily output and tolerance requirements.

2. What is the exact difference between annealing furnace and solution furnace?

Annealing furnaces focus on stress relief, material softening and anti-oxidation bright finishing for steel, stainless steel and copper parts. Solution furnaces are specially designed for aluminum alloy strengthening, improving tensile strength and forming performance through uniform element dissolution.

3. Can you customize furnaces for my unique workpiece size and process?

Yes. All 9 series of Rexin furnaces support full non-standard customization, including furnace chamber size, temperature range, atmosphere ratio, heating speed and automation programs to solve your personalized quality defects.

4. How can you guarantee stable quality and lower my scrap rate?

We provide one-stop process debugging, parameter optimization and atmosphere matching service. Verified industrial solutions effectively reduce oxidation, deformation, porosity and hardness inconsistency, helping customers reduce scrap rate by 20%–40%.

5. Do your furnace lines support mixed-process production?

Yes. We freely combine hardening, tempering, annealing, brazing, sintering and surface strengthening equipment to build hybrid production lines for multi-process and multi-product manufacturing.

6. What is your delivery time and after-sales guarantee?

Standard furnace delivery takes 20–30 working days; customized turnkey lines take 30–45 working days. We provide 12-month full-machine warranty, lifelong spare parts supply, 24/7 remote technical support and overseas on-site commissioning service.

7. Are your solutions compliant with automotive and export standards?

All equipment and thermal processes comply with CE, ISO9001 and IATF16949 standards, fully supporting third-party testing, OEM cooperation and global industrial product export.

8: Can your furnace adapt to 480V power supply for North American factories?

A: Yes, we support custom transformation for global voltage standards: 380V / 415V / 480V, frequency 50Hz / 60Hz optional.

9: How long is the service life of main spare parts?

A: Mesh belt service life: 8–14 months; heating elements: 12–24 months; sealing components: 6–12 months. We provide long-term spare parts supply.

10: Will you send engineers for overseas installation & commissioning?

A: We support global on-site installation, commissioning and operator training service. Remote technical guidance is available permanently.

11: Can you provide complete heat treatment process curve suggestions for 40Cr, stainless steel, aluminum alloy?

A: After confirming your workpiece parameters, our thermal process engineer will provide recommended heating, holding and cooling curve documents free of charge.

Applicable Industries & Full Product Matching Cases

Rexin Heat treatment furnace product system fully industrial fields: Hardware & Fasteners, Tooling & Cutting Tools, Stainless Steel Strip & Tube, New Energy Vehicle Parts, Powder Metallurgy & Cemented Carbide, Heat Exchanger & Radiator, Aluminum Alloy Heat Treatment, Bearing & Precision Parts and Heavy Machinery Processing. Each industry corresponds to exclusive matched furnace combinations and verified process solutions.

Get Your Full-Set Custom Heat Treatment Solution

If you are confused about furnace selection, troubled by repeated quality defects, send us your workpiece materials, defect problems and production capacity requirements. Our professional thermal engineers will provide free problem diagnosis and targeted full-set furnace solutions to improve your production yield and profitability.

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